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Electrical Technology

BI 1475

New

According to New Revised 'G' Scheme

Electrical Technology

Author: Vijaykumar Kamble, Sapna Sonar, Pankaj Vispute

Book Id: 1475

ISBN No: 9789350161869

Second Year Diploma, Sem III

Computer Branch

Solved Question Papers of Winter 2015

Rs.203

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-10%

Contents

1. D.C. Circuits

1. Introduction to Electricity

2. Ohm’s Law

Solved Examples

3. Kirchhoff’s LAWS

Solved Examples

4. Maxwell’s (Mesh) Loop Current Method

Solved Examples

5. Node Analysis

6. Star / Delta and Delta / Star Conversion

2. AC Fundamentals

1. Introduction

1.1 Magnetic Field

1.2 Magnetic Flux (Æ)

1.3 Faraday’s Laws of Electromagnetic Induction

1.4 Lenz’s Law

2. Alternating Current

2.1 Generation of Alternating Current and Voltage

2.2 Graphical Representation of Voltage and Current

2.3 Some Important Terms Related to Alternating Quantity

3. Phase of AC Quantities

3.1 Phase

3.2 Phase Difference

3.3 In Phase

3.4 Lag

Solved Examples

4. Behaviour of A.C. Circuits

4.1 A.C. Through Pure Resistance

4.2 A.C. Through Pure Inductance

4.3   A.C. Through Pure Capacitor

Solved Examples

3. AC Series Circuits

1. Introduction

1.1 Rectangular and Polar Representation of Phasors

1.2 Conversion of Polar to Rectangular Form

1.3 Conversion of Rectangular to Polar Form

1.4 R – L series circuit

2. Concept of Impedance and Impedance Triangle

2.1 Impedance

2.2 Impedance Triangle

3. Power Triangle, Apparent Power, Reactive Power and Active Power

3.1 Power and Power Triangle

3.2 Apparent Power (s)

3.3 True Power or Active Power (P)

3.4 Reactive Power (Q)

4. Power Factor and its Significance

4.1 Power Factor (cos f)

4.2 Significance of Power Factor

4.3 R-C Series Circuit

Solved Examples

4.4 R-L-C Series Circuit

Solved Examples

5. Measurement of Single Phase Power using Dynamometer Type Wattmeter

4. Three Phase Circuits

1. Introduction

2. Generation of Three Phase Voltage System

4. Concept of Line Voltage and Phase Voltage

5. Concept of Line Current and Phase Current

6. Relation between Phase and Line Current, Phase and Line Voltage

Solved Examples

5. Electrical Machines

1. Introduction

2. Single Phase Induction Motor

2.1 Making Single Phase Induction Motor Self Starting

2.2 Types of Single Phase Motors

3. Transformer

3.1 Working Principle of Transformer

3.2 Types of Transformer

3.3 E.M.F. Equation of a Transformer

3.4 Voltage and Current Ratio

3.5 Efficiency of Transformer

4. Auto Transformer

Solved Examples

6. Electrical Safety

1. Introduction2

2. Earthing of Electrical Equipments

2.1 Types of Earthing

3. Fuses

3.1 Need of Fuse

3.2 Construction

3.3 Types of Fuses

3.4 Miniature Circuit Breaker or MCB

3.5 Comparison between Fuse and MCB

4. Electric Shock

4.1 Factors Affecting Lethality of Electric Shock

4.2 Precautions Against Electric Shocks

4.3 Handling Shock Victim / Cure of Electric Shock

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